Pen filling ink bottle



March l1, 1941. R F, [VERSQN 2,234,256

PEN FILLING INK BOTTLE Filed June lo, 1940 fito Patented Mar. 11, 1941 UNITED STATES PATENT OFFICE 14 Claims.

This invention relates to ink bottles and particularly to the type designed to be the filling medium for fountain pens.

One of the principal objects of the invention is to eliminate the conventional filling mechanisms of fountain pens and thereby parts that are subject to wear, repair and replacement.

It is another principal object of this invention to provide an ink bottle whereby fountain pens can be filled by manipulation of the bot-tle.

Still another principal object of the invention is to provide a fountain pen adaptable for use with my ink ,bottle and which will also be adaptive for filling from `other types of ink bottles.

A fourth object is to provide means whereby other types of ink bottles may be made adaptable for filling pens in accordance with certain principles and features of my invention.

A fth object is to increase the ink capacity of pens without increasing the size thereof, or to 'decrease lthe size of pens without decreasing ink capacity.

A sixth object is to provide a cleaner method of filling fountain pens.

A seventh object of the invention is to eliminate or at least minimize the danger of injuring the pen point in the process of filling the pen.

And an eighth object of the invention is to provide a method of filling fountain pens whereby the ink bottle may be completely emptied of its contents in the pen filling process.

How these objects have been attained by my invention, and other features and advantages of the invention will be apparent from the following description with reference to the accompanying drawing in which:

Fig. 1 is a central longitudinal sectional View of the preferred embodiment of my pen filling ink bottle, and a fountain pen att-ached thereto in filling relationship;

Fig. 2 is a transverse sectional view taken on the line 2-2 Fig. 1;

Fig. 3 is an elevational View of a stopper for the bottle.

This invention involves the application and use of two fundamental principles: one, the insertion of the writing end of a fountain pen into the neck of an-ink :bottle in a leak-proof engagement and the inverting of the assembled elements, thus employing the principle of gravity in the filling of the pen; and two, the novel process of filling pens by the application of pressure to, and the compression of, the sides of the ink bottle.

With reference to the drawing, the numeral I vdenotes an ink bottle preferably made of plastic material with two diametrically opposite flexible sides 2, 2 of the proper thickness and pliability to permit compression thereof under light manually applied pressure without cracking or breaking. In order to maintain the normal form of the bottle the other two sides thereof are reinforced as indicated by the numerals "l, l. The bottom of the bottle is likewise reinforced as at 3 (Fig. 1).

Itis to be noted that the lower extremity of the bottle tapers oif as at 6, 6 Fig. l to the elliptiform bottom 3 Fig. 2: and that the upper extremity of the body of the bottle tapers off as at 5, 5 to a parabolic shaped shoulder deno-ted by the numeral 9. This tapered feature of construction is specially designed to facilitate smooth and easy longitudinal compression of the sides 2-2 of the bottle. I

With reference to the neck 3l of the bottle I, it` will be noted that the lower portion thereof forms an internal shoulder I; and that the upper portion thereof is provided with threads II that correspond to the external threading on the lower end of the fountain pen. On the shoulder and in the annular groove I3 which is formed or cut in the wall of the bottle neck is seated a washer I2 which is preferably of rubber or of composition of identical qualities.

The pen as shown comprises a Ibarrel I4, the lower end of which is threaded internally to receive the usual section I into which feed bar I6 and -a pen point Il are fitted in the customary manner; and threaded externally to correspond with the threading I i of the bottle neck substantially as shown.

Fig. 3 illustrates a stopper for my ink bottle. With reference thereto 4the number I9 denotes a knurled head, denotes threading to -correspond with the threading II of the bottle neck, and 2l denotes a shank designed to seat against the washer I2 to prevent splashing of ink into the bottle neck when the bottle is moved about or the contents thereof is shaken.

Having thus described the mechanical features of my invention I shall now describe and explain its operation in practice.

The pen isithreaded into the neck of the bottle until its lower end contacts and seats securely on the washer I2 as shown in the drawing. Then, with the thumb and forefinger of one hand acting as the axis-thumb on one of the compressible vsides of the bottle and forefinger on the otherthe combination is turned to the filling position which is with :the bottle bottom side up and the pen extending perpendicularly downward. The pen is then lled by a succession of pressure applications to the sides of the bottle by the thumb and forenger of the hand in which the bottle is held.

Application of pressure to the sides of the bottle sets up reciprocal action whereby the pressure created within the bottle, combined with the iniiuence of gravity upon the air and liquid contents of bottle and pen, causes the flow of a quantity of ink from the bottle into the pen.

Release of the pressure against the sides of the bottle results in a process of equalization of'pressure within bottle and pen that causes a partial vacuum which in turn, causes a quantity of air to pass from the pen into the bottle.

To facilitate filling, especially when lthe ink supply in the bottle is low, the sides of lthe bottle may be partially compressed while the pen is being threaded into lling position. Releasing the pressure after the pen has been properly seated will create a partial vacuum within `bottle and pen. Then, when pressure is applied to the sides of the bottle in the filling process, the forces It should be obvious to those sinned in the me-y chanics of pen construction and operation that by this method of filling fountain pensthere is not the danger of injuring the pen point by striking it against the sides or bottom of the bottle that is inherent in filling pens from ordinary ink bottles. c It will also be obvious that if due care is exercised in handling the bottle and pen in the course of the filling operation no ink will get on the vsection part of the pen and therefore no cleaning or wiping of the part will be necessary after the filling operation.` Obviously too, there is less danger of spilling ink or of soiling the hands. And it lwill be obvious that the bottle can be drained :to the last drop in the pen filling process.

That my invention will be susceptible to modifications without departingvfrom the spirit thereof should also be obvious.

What I claim is: Y

1. A filling bottle for fountainpens comprising a one piece reservoir and attaching neck formed of plastic material, the reservoir havingintegral thin flexible sides and the neck having an interiorly threaded upper end and a seat for engagement with the lower end of a fountain pen upon screwing theV p en into lthe threaded upper end ofthe neck. A c

2. A filling bottle for fountain pens comprising a one piece reservoir and attaching neck formed vof plastic material, the reservoir havingr flattened sides including integral thin flexible sidesv and the neck being relatively thick and rigid and having `an interiorly threaded upper end and a seat for engagement with Vthe lower end of a fountain pen upon screwing the pen into the threaded upper end of the neck. 1

3. A filling bottle for fountain pens comprising a one piece reservoirand attaching neck formed of plastic material, the reservoir having thin flexible sides integral `with ribreinforced sides and the neck being relatively thick and rigid and having an interiorly threaded upper end and a seat for engagement with the lower end of a fountain pen upon screwing the pen into the threaded upper end of the neck.

4. A filling bottle for fountain pens comprising a one piece reservoir and attaching neck formed of plastic material, the reservoir havingthin Hex'- ible sides and the neck being thick and relatively rigidl and having an interiorly threaded upper end and a seat for engagement with the lower endof a fountain pen upon screwing the pen into the threaded upper end of the neck.

5. A filling bottle for fountain pens comprising a one piece reservoir and attaching neck, formed of plastic material, the reservoir having attened sides including thin flexible sides and rib reinforced sides and the'neck being relatively thick and rigid and having an interiorly threaded upper end and a seat for engagement with the lower 4end of a fountainpen upon screwing the pen'into the threaded upper end `o"f the neck.

6. A filling bottle for fountain pens comprising a one piece reservoir and attaching neck formed of plastic material, the reservoir having Vfiattened sides including integral thin fiexible sides and rib reinforced relatively inflexible sides, the neck being relatively thick and rigid and having an interiorly threaded upper end and a seat for engagement with the lower end of a fountain pen upon screwing the pen into the threaded upper end of the neck, and a pliable washer on the seat. c y

7. `A filling bottle for fountain pens comprising a one piecezreservoir and attaching neck formed of plastic material, the reservoir having flattened sides including thin fiexible sidesY andrib re inforced sides and the neck being relatively thick and rigid and having an interiorlyv threaded upper end and a seat for engagementwith the lower end of a fountain pen` upon screwing the pen into the threaded upper end of. the neck, an annular groove adjacent the seat, and a pliable washerr in the seat and fitting into the groove.

8. A filling bottle for fountain pens comprising a one piece reservoir and attaching neckfformed of plastic material, the reservoir having flattened sides including thin flexible sides and rib` reinforced relatively inflexible sides and theneck being relatively thick and rigid and Vhaving an interiorlyy threaded upper end and a seat for engagement with `the lower end of a fountain pen upon screwing the pen into 'the threaded upper end of the neck, and annular groove adjacent the seat, a pliable washer on the seat and fitting into the groove, l,and a stopper having a knurled head, a threaded central portion, and a shank forengagement with the seat -when the stopper is threaded into the threaded upper end of the neck. v i Y 9. A filling b ottle for fountain pens comprising a one piece reservoir and attaching neck formed of plastic material, the reservoir having thin fiexible sides andthe neck being relatively thick and rigid and having an interiorlythreaded `upper end and a seat for engagement with the lowei` end of a fountain pen upon screwing the pen into the threaded upperend of the neck, and a pliable washer on the seat. f

10. A filling bottle for fountainpens comprising a one piece reservoir and` attaching neck formed of plastic material, the reservoir having flattened thin flexible sides and the neck being relatively thick and rigid and having an interiorly threaded upperI end and a seat for engagement with the lower endof a fountain pen upon threading Vthe pen into the threadedupper end of the neck, an annular groove vadjacent the seat, a pliable washer on the seat and fitting into the groove, and a stopper having a knurled head, a `threaded central portion, and a shank for gen.- gagement with the seat when it is screwed .into the threaded upper end of the neck.

11. A filling -bottlefor fountain pens comprising a, onepiece reservoir and attaching neck formed of plastic material, the reservoir having attened sides including integral thin exible sides, the thin flexible sides being transversely convex and the neck having an interiorly threaded upper end and a seat for engagement with the lower end of a fountain pen upon screwing the pen into the threaded upper end of the neck.

12. A lling bottle for fountain pens comprising a one piece reservoir and attaching neck formed of plastic material, the reservoir having attened sides including integral thin exible sides, the sides tapering oi from a point near the lower end of the reservoir to an elliptiform bottom and the thin iiexible sides being transversely convex, and the neck having an interiorly threaded upper end and a seat for engagement with the lower end of a fountain pen upon screwing the pen into the upper end of the neck.

13. A filling bottle for fountain pens comprising a one piece reservoir and attaching neck formed of plastic material, the reservoir having integral attened thin iiexible sides and reinforced relatively inflexible sides, and tapering off from a point near its lower end to an elliptiform bottom, and the neck being relatively thick and rigid and having an interiorly threaded upper end and a seat for engagement with the lower end of a fountain pen upon screwing the pen into the threaded upper end of the neck, an annular groove adjacent the seat, and a washer on the seat and fitting into the groove.

14. A filling bottle for fountain pens comprising a one piece reservoir and attaching neck formed of plastic material, the reservoir having integral flattened thin exible sides and reinforced relatively inexible sides, and tapering off from a point near its lower end to an elliptiform bottom, and the neck being relatively thick and rigid and having an interiorly threaded upper end and a seat for engagement with the lower end o1" a fountain pen upon screwing the pen into the threaded upper end of the neck, an annular groove adjacent the seat, a washer upon the seat and fitting into the groove, and a stopper having a knurled head, a threaded central portion, and a shank for engagement with the seat when the stopper is threaded into the upper end of the neck.

RICHARD F. IVERSON. 

